About 95% of all households that have kids in diapers use disposables. Why? Today’s diapers have super-absorbent gels meaning fewer diaper changes, especially at night. Even many parents who swear cloth diapers are best often use disposables at night. The downside? All that super-absorbency means babies potty train later. Besides eco-arguments about disposables, there is one other disadvantage—higher trash costs.